Fabrics composed of ribbon-like fibrous material and method...

D - Textiles – Paper – 01 – D

Patent

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D01D 5/253 (2006.01) D01D 5/34 (2006.01) D01D 10/00 (2006.01) D01F 8/06 (2006.01) D01F 8/12 (2006.01) D01F 8/14 (2006.01) D04H 3/14 (2006.01) D04H 3/16 (2006.01)

Patent

CA 2200780

A method of making a flexible fabric composed of a fibrous matrix of ribbon- like, conjugate, spun filaments. The method includes the following steps: 1) providing a fibrous matrix composed of individual, spun filaments bonded at spaced-apart bond locations, the filaments themselves being composed of: (i) a core formed of at feat one low- softening point thermoplastic component; and (ii) a sheath formed of at least one high-softening point component; and 2) applying a flattening force to the fibrous matrix to durably distort the core of individual filaments into a ribbon-like configuration having a width greater than its height so that: (i) the individual filaments are substantially unattached between the spaced-apart bond locations, and (ii) the width of individual filaments is oriented substantially in the planar dimension of the fabric. Also disclosed is a flexible fabric composed of a fibrous matrix of ribbon-like, conjugate, spun filaments joined at spaced-apart bond locations.

Procédé d'élaboration d'un tissu souple composé d'une matrice fibreuse constituée de filaments filés à plusieurs composants et en forme de ruban. Le procédé comporte les étapes suivantes: 1) établissement d'une matrice fibreuse constituée de filaments individuels filés, liés au niveau de certains sites espacés, ces filaments étant eux-mêmes composés de: i) une âme réalisée dans au moins un composant thermoplastique à point de ramollissement bas; et ii) une gaine réalisée dans au moins un composant à point de ramollissement élevé; et 2) application d'une force d'applatissement à la matrice fibreuse, de manière à déformer durablement l'âme de chacun des filaments pour obtenir une configuration en forme de ruban dont la largeur est plus importante que la hauteur, de telle sorte que: (i) chaque filament soit essentiellement libre entre les sites de liaison espacés, et (ii) la largeur de chaque filament soit disposée essentiellement dans le sens du plan du tissu. L'invention porte également sur un tissu souple constitué d'une matrice fibreuse de filaments filés, à plusieurs composants et en forme de ruban, réunis au niveau de sites de liaison espacés les uns des autres.

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